Roller blank and process of making rollers therefrom



W. A. BEAUCHAMP June4, 1940.

ROLLER BLANK AND PROCESS OF MAKING ROLLERS THEREFROM Filed Oct. 14.19:57

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iii-7 V v fimmmmww VE/V TOE h/// FE[ D 6? 5591/! HQMP Patented June 4,1940 UNITED STATES PATENT. OFFICE ROLLER BLANK AND PROCESS OF MAKINGROLLERS THEREFROM Application October 14 1937, Serial No. 168,978

10 Claims.

This invention relates to roller blanks and the method of making rollersfrom said blanks.

' It is an object of this invention to provide novel blanks from whicheccentric rollers may be quickly and economically fashioned.

A further object is to provide a method whereby eccentric rollersembodying inner cores or disks and outer rims may be producedinexpensively and with a minimum of operations.

Other objects of the invention Will become clear as the descriptionthereof proceeds.

In the drawing forming part of this specification:

Figure 1 is a vertical section through a blank.

Figure 2 is a vertical section of roller rim obtained from the blank andready for assembly into a roller.

Figure 3 is a vertical section of a roller core obtained from the blankand'prepared for assembly into a roller.

Figure 4 is an elevation of an eccentric roller.

Figure 5 is a vertical section taken on line 5--5 of Figure 4.

Referring to the drawing, Figure 1 thereof illustrates in section anovel forged blank from which the main portions of the eccentric rollerillustrated in Figure4 of thedrawing are obtained. This blank designatedin its entirety by the reference numeral ill is preferably forgedalthough it will be understood that the blank is not necessarily limitedto a forging. The blank I is prepared so as to present in a unitarystructure defined core and rim portions H and I2. The circumference ofthe core II is indicated at [3 and the inner circumference of the rim I2is shown at l4. Extending between these two circumferences andconnecting the core and rim into a unitary structure is a connecting webl which as clearly appears in Figure 1 of the drawing is relativelythin. A similar web It may be formed in the core ll upon removal ofwhich a preferably rectangular opening is provided in the core. Ifdesired, however, the core I6 may be omitted from the blank and therectangular opening herebeted as indicated at l8 and 19 for a purposewhich will later appear.

In the removal of the rim and core from the blank Ill the connecting Webl5 may be cut away in order to separate the core H from the rim I2. Theinner circumference of the rim is then. machined in order to remove thedraft surfaces produced by the forging operation. In like manner theperiphery of the core is machined to remove the draft surfaces andprovide the rabbeted portions [8 and I9. Also the web 16 in the core isremoved and the surfaces which it connects are machined. While thisseries of steps may be resorted to in properly removing the rim and thecore from the blank and preparing them for assembly into a roller, it ispreferred to chuck the blank in a machine in such a way that the coreand rim portions of the blank will be prop erly supported so thatthe'removal of the webs I 5 and I6 and the machining of the innercircumference of the rim and the outer portion of the core may beperformed in a single operation.

The prepared rim and core are assembled together with a roller bearing20 to form the roller 2! illustrated'in Figures 4 and 5 of the drawing.It will be apparent from an examination of these figures that therectangular opening I! is disposed eccentrically with respect to thecenter of the core thereby producing an eccentric roller. Where it isdesired to produce a roller that is not eccentric the opening I! may, ofcourse, be disposed concentric with the core. The roller bearing 20comprises in addition to a series of rollers 22 a cage designated in itsentirety by the reference numeral 23, portions of which are disposed inthe rabbeted parts [8 and I9 of the core as illustrated in Figure 5 ofthe drawing.

It will be apparent that numerous changes and modification in thedetails of the invention will be clear to those skilled in the art. Itis intended, therefore, that all such modifications and changes becomprehended within this invention, which is to be limited only by thescope of the claims appended hereto.

I claim:

1. A cylindrical blank for the production of an eccentric rollercomprising a core and a rim may be produced, the inner portion of saidblank being shaped to substantially the form of the core of said roller,the outer portion of said blank being shaped to substantially the formof the rim of said roller, and a web connecting said inner and outerportions of said blank.

2. A cylindrical forging for the production of an eccentric rollerhaving a core and a rim, said forging comprising an inner and an outerpor tion, a connecting web separating said portions, said inner portionbeing forged substantially to the form of the core of said roller andsaid outer portion being forged substantially to the form of the rim ofsaid roller.

3. The method of producing an eccentric roller having a core and aseparate rim comprising die forging a unitary blank to shape the innerportion of said blank to the form of said core and the outer portion ofsaid blank to the form of said rim and provide a connecting web betweensaid inner and outer portions, forming an opening in said core offsetfrom the center thereof, removing said core and rim from said blank,machining the outer circumference of said core and the innercircumference of said rim and interposing an anti-friction bearingbetween said core and said rim.

4. A blank for the production of a roller having a core and a separaterim, said blank comprising inner and outer portions, said inner portionbeing shaped substantially to the form of the core of said roller andembodying a peripheral member and a relatively thinner web, the outerportion including inner and outer peripheral members and an intermediatemember of reduced thickness and a web connecting said inner and outerportions of said blank.

5. A blank for the production of an eccentric roller having a core and aseparate rim, said blank comprising inner and outer portions, said innerportion being shaped substantially to the form of the core of saidroller and embodying a peripheral member and a relatively thinner Web,said peripheral member having a section of reduced thickness, the outerportion including inner and outer peripheral members and an intermediatemember of Qi'educed thickness, and a Web connecting said inner and outerportions of said blank.

6. The method of producing a roller having separate core and rim memberscomprising subjecting a blank to a die forging operation to formsimultaneously the shaped core member and shaped rim member of saidroller, separating said core and rim members, machining the outercircumference of said core member, machining the inner circumference ofsaid rim member and interposing an anti-friction bearing between saidcore and rim members.

7. The method of producing a roller having separate core and rim memberscomprising subjecting a blank to a die forging operation to formsimultaneously the shaped core member and shaped rim member of saidroller and a relatively thin web connecting said members, removing saidweb, machining the outer circumference of said core member, machiningthe inner circumference of said rim member and interposing ananti-friction bearing between said core and rim members.

8. The method of producing a roller having separate core and rim memberscomprising subjecting a blank to a die forging operation to formsimultaneously shaped core member and shaped rim member of said rollerand a relatively thin web connecting the outer circumference of saidcore member with the inner circumference of said rim member,simultaneously removing,

said connecting web and machining said circum-- ferences of said coreand rim members and inter posing an antifriction bearing between saidcore and rim members.

9. The method of producing a roller having separate core and rim memberscomprising simultaneously shaping said core and rim mem-' bers by aforging operation in asingle forging die, separating said core and rimmembers, ma-

cjnining the outer circumference of said core member, machining theinner circumference of said rim member and assembling said members intosaid roller.

10. A blank for the production of a roller having separate core and rimmembers, said blank comprising a unitary structure having an innerportion embodying a Web and relatively thicker oppositely extendingcircular flanges projecting from said web and forming the core member ofsaid roller, and an outer portion including spaced oppositely extendingcircular flanges and an intermediate relatively thinner Web and formingthe rim of said roller, said inner and outer portions being formed intosaid unitary structure by a relatively thin connecting Web, said flangesof said inner portion being of increased Width below the center of theweb of said inner portion and including a section of reduced thickness.

WILF'RED A. BEAUCHAMP.

